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Erfassung der Sensitivitaten gegeniiber Anilinopyrimidin‐ und Strobiiurinfungiziden in Populationen des Apfelschorfpilzes (Venturia inaequalis)
Author(s) -
Kunz S.,
Lutz Bu.,
Deising H.,
Mendgen K.
Publication year - 1998
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1998.tb04684.x
Subject(s) - venturia inaequalis , strobilurin , apple scab , fungicide , biology , conidium , orchard , horticulture , pyrimethanil , fungus , botany , azoxystrobin
The sensitivity of Venturia inaequalis populations to the anilinopyrimidine fungicides pyrimethanil and cyprodinil was analysed by microscopic in vivo analysis of conidiophore formation. The sensitivity to the strobilurin kresoxim‐methyl was analysed using an in vitro germination assay and by determination of the diseased leaf area and conidia produced in vivo. Baseline sensitivities were determined with V. inaequalis populations from control orchards that had never been treated with fungicides. Comparison of the baseline sensitivities with sensitivities of populations obtained from orchards that had received 43 anilinopyrimidine treatments over 4 years, or from an orchard with 54 kresoxim‐methyl treatments over 6 years indicated that no resistance to these fungicides has developed at the sites sampled.